I just installed wordpress, and decided to install a plugin but have just noticed in says its for WPMU only. Anyway now when I go to the admin area it says
Fatal error: Call to undefined function is_site_admin() in /home/higgins1/public_html/kawadri.tv/wp-content/plugins/extra-page/extra-page.php on line 53
Anyone have any idea?
I am new to wordpress